Pulverizing-machine



(No Model.) v 4 SheetsSh eet 1.

R. D. GATES 82: O. KAESTNER.

PULVERIZING MACHINE.

No. 819,479. Pate'ntedJuhe 9, 1885.

N. PETERS, Phulc'h'lhcgmphnr. Washington, 0.6,

(b Io M 0de1.,) 4 Sheets-Sheet 2. R. D. GATES & O. KAESTNER.

, PULVERIZING MACHINE. No. 319,479. Patented June 9, 1885.

Mtmesses 92 92M. 6/

fla r/( 22107 F" N. PrrEns Phciodjlhcgnaphar, Washmgton, 11 C (No Model.) 4 SheetsSheet 3. R. D. GATES & O. KAESTNER.

PULVERIZING MACHINE.

No. 319,479. Patented June 9, 1885 o N .3 R

i F S? E ifi'ziwsses:

N. PETERS, Phmunw n hor, Wnhingtom a c,

(N0 ModeL) 4 Sheets-Sheet 4.

PM D. GATES 8; U. KAESTNER.

PULVERIZING MACHINE.

No. 319,479. Patented June 9 1885.

N, PETERS. PhomLilhu m hnr, Washington. D. C.

UNITED STATES Parana Critics.

RYERSON D. GATES AND CHARLES KAESTNER, OF CHICAGO, ILLINOIS.

.PULVERIZING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 319,4:79, dated June 9, 1885.

Application filed July 2, 1884. (No model To all whom it may concern.-

Be it known that we, RYERsoN D. GATES and CHARLES KAESTNER, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Pulverizing- Machines, of which the following is a specification.

Our invention relates to an. improved pul' verizing-machine; andit consists of certain constructions, combinations, a'nd arrangements of parts hereinafter fully described, and specifically claimed, whereby advantages over other pulverizers are gained, as the following specification will show.

In the accompanying drawings, illustrating our invention, Figure 1 is chiefly a side elevation of a pulverizer with our invention, parts being broken away and other parts being shown in section in order to expose the inner construction of the machine, as will be described. Fig. 2 is an end diagram of thesame, showing the arrangement of geared wheels and pulleys in dotted lines. Fig. 3 is a vertical transverse section through the shaft-s of the machine just beyond their bearings and an end elevation of the pnlverizer-case and its attachments. Fig. 4 is a top view of the feeding mechanism of the pulverizcr. Fig. 5 is an elevation of the agitating-lever and other parts of said feeding mechanism. Fig. 6 is an end view of the same with the operating-shaft in cross-section. Fig. 7 is an end view and part section of a modified construction of the said agitating-lever and other parts belonging thereto. Fig. Sis an elevation of the lever shown in Fig. 7. Fig. 9 isa longitudinal vertical section in the line as x of Fig. 3, of the main portion of the pulverizer with its feeding mechanism, the outer portions of the shafts being broken off. Fig. 10 is an elevation of the sliding clutch and lever of a coupling mechanism between the feed mechanism and main shaft of the machine. Fig. 11 is an end view of the same, the shaft being shown in cross-section and Fig. 12 is an elevation of one of the end disks of the screen of the pulverizer.

A represents a suitable frame or outer case, B a main operating-shaft, and C pulverizingrollers.

l) and B respectively designate feeding mech anism and a coupling device,the parts of which will be hereinafter specially described;

The main shaft B is suitably boxed or journaled at a, in the frame A, and sustained at a a and a in pedestals A and A while the rollershafts are boxed upon the case A .and connected by a spider, a, on shaft B in the usual manner. By means of ordinary gear-wheels, c, the rollers are coupled in two pairs, and by suitable gear-wheels,b b b,m0tion. is transmit ted from the main shaft to one pulverizingroller C of each pair, and as the rollers are geared in separate pairs, which are connected by the wheel I), all will be revolved with a uniform motion. The journal-bearing boxes do of the rollers are formed in one piece, as represented, and arranged in a yoke or strap, 0", which is adjusted on a ledge of the frameA by suitable known mechanism, and are provided with removable gib-boxes 0 in which Babbitt metal 0 is placed, as indicated by dotted lines in Fig. 3. This construction is quite important as the pressure and wear come mainly on these gib-boXes, and when the bearing-metal wears away the gib-boxes can be slipped out and relined, or new gib boxes substituted therefor, Without taking the machine apart to any great extent, and without disturbing the straps c" and boxes 0, and thus much time in repairing the machine is saved. The pulverizing-rollers are arranged within the case A, and are surrounded by a cylindrical revolving screen F, which allows the fine portions of the pulverized matter to pass through the Wire-gauze f into a suitable chute or chamber below, while the unfinished portions of the pulverized substances are, by means of suitable buckets, f, elevated over the top pair of rollers C and discharged between them to be reground. The wire-gauzef of the sieve or screen is stretched over two parallel annular side plates, f to which the buckets f are also suitably fastened. These side plates, f are provided with outer rims, f upon which latter tires f are fitted. By means of the tires f the screen F rests upon supporting and revolving rollers g of two parallel operating-shafts, G G,and by means of said rollers is revolved.

the tires f become worn out or damaged,they can be easily taken off the screen F and new tires placed upon the rims f of the screen, and thus it will not become necessary to throw When FCO

away the side plates, f, as is the case when the rims f have no tires and run directly upon the rollers g and soon wear away. The circular openings in the annular plates f 2 are closed by two stationary disks, H, which are held in place in the case A by means of angular brackets h and two bolts, H. The brackets hare horizontal, and attached to or formed on the disks H, and they rest upon horizontal ledges a on the case or frame A.

The bolts H pass through case A on a line parallel with the main shaft B, and are provided at their ends with nuts h, which bear against the outer sides of the case A, and in order to prevent overstraining and prevent the disks from binding against the side plates, f, of the screen F, and thus impeding the motion, we place a sleeve, h, of proper length upon each bolt between the disks, and washers ]L3 of proper thickness between the case and disks. The shafts G G are suitably hung in the case A, and are provided with pulleys g of equal diameters, over which a belt, is stretched, which causes the shaft G to revolve at the same speed as shaft- G. The shaft G extends through the pedestal A, where it issteadied. by a journal-bearing, a, and at each side is provided with aloose clutchpulley, g g, and sliding clutches g revolving with the shaft. The clutches g are fitted upon keys, 9, of the shaft G, and-have a longitudinal movement thereon, so as to be adjusted in and out of gear with the clutch-pulleys, this being effected by operating a lever, 9 (Sec Figs. 1, 2, 10, and 11.) The clutchpulley 9 receives motion by means of a belt, I), from a pulley, b, on the shaft 13, and the clutch-pulley g transmits motion by means of a belt, 71, to apulley, i, on a shaft, I, whereby the feeding mechanism D is operated, as will be presently described. When the clutchpulley g is disconnected from its relative coupling-clutch githescreenFand the feeding mechanism D are not operated. When the clutchpulley is connected with its relative coupling-clutch g, and the clutch-pulley g is disconnected from its relative coupling-clutch g the screen F is operated and the feed motion is inoperative, and thus we can stop the feed or supply of the machine whenever it is found necessary for more properly pulverizinga too great accumulation of partially pulverized substances in the screen. When both clutch-pulleys g are connected with their coupling-clutches 9 the screen F and the feeding mechanism are both-operated. This feeding mechanism consists of a hopper, .T, supported by an intermediate-frame, j, which may have a staying bottom, j, with two side feed-openings and a central passage in it, as shown.

The frame 7' rests upon chute-extensions A of the case A, and is provided with two horizontally-oscillating chutes, K.

The hopper J has two funnel-shaped openings, j, directly below which the two chutes K are hung in the following manner: The

chute-bodies is, formed of a bottom, two high sides, and a high back, as seen in Figs-4 and 9, are fastened each to an oblong frame, k, which is provided with aslotted head, 76*, and a central longitudinal arm, The slotted heads 70 of the two frames 70 are pivoted at k is to the flat T-shaped head Z of an oscillating lever, L, which has its fulcrum at Z on a transverse bracket, L, suitably fastened to the intermediate frame, j, fixed on top of the case A, while the lower portion of said lever is provided with a curved arm, Z, and a slotted, head, P. To the slotted head Z an adjustable lever-arm, L is pivoted at Z, and its upper end is provided with a set-screw, Z", and checknut Z, the former bearing upon the lever L. The lower extremities of the arms of levers L and L are provided with friction-blocks 1 which may be partly seated into the metal of the arms, and are fastened thereto by means of bolts Z By means of the set-screw Z the friction-blocks! can be forced with any desired degree of ti ghtncss upon the opposite sides of an eccentric, i, which is fastened to the shaft I. It is important that the chutes K shall have an oscillating motion sidewise and up and down, and 'such motion is secured by having each chutehung at one end upon the rolling arm or pivot k and conneeted by a pin, k at its other end to the lever L, which has its fulcrum at Z, as shown in the drawings. Through the eccentric i the lever L and the chutes K receive an oscillatory motion, whereby the contents of the chutes are caused'to gradually'leave the same and drop into the chute-extensions of the frame A, and the dis charge of the chutes can be regulated by the following described mechanism: The arms 70 of the chute-frames 70 rest upon two arms,

at, on a shaft, M, which latter is suitably hung to the frame j by means of journalbearings m m. with a slotted lever-arm, m to which the head a of a screw, it, (see Figs. 1- and 3,) is pivoted at m. The screw 01 passes through a hollow This shaft M is provided 7 abutment or head, a, suitably fastened to the frame j, and below said head a is provided with a threaded hand-wheel, N, which, being turned to the right or left, will lower or raise the screw it, the arms at, andv the arms 7c of the chutes K, and thus cause the chutes to discharge their contents more or less freely into the aforesaid chute-extensions A The chuteextensions A are joined-at the inner ends, a by chutes 71, .on the disks H, whereby the con tents of the chutes K are conducted between the upper pair of rollers, as illustrated in Fig.

9. Below theu'pper pair of rollers a hopper, J, is hung to the sleeves h by means of hooks on the said hopper, as shown in dotted lines in Fig. 3, 'or in any other suitable manner,

whereby the pulverized substances discharged from the upper rollers are collected and discharged between the lower pair of rollers in a proper manner.

For the purpose of operating the machine, the main shaft B is provided witha drivingpulley, B.

Instead of constructing the lever L asabove described, we may use a lever L with a forked lower head, 2, having adjustable frictionblocks Z fitted in suitable socket-s, Z and adjusted by means of set-screws P, as seen in Figs. 7 and 8; and, if desired, the main hopper J may have only one funnel-shaped dischargeopening jand one chute K, in which case only one chute on extension A and one chute h on the disk H will be required.

The material to be pulverized is at first broken into small pieces of suitable size by a stone or rock crusher. It is then delivered into the hopper J, the bottom openings, j, of which being closed by raising the chutes K close to them by means of the screw 12 and wheel N, as is indicated by dotted lines in Fig. 9. This is done in order to get therollers into proper working speed before any of the crushed material is introduced between them, it being almost impossible to start the rollers with substances between them. When the rollers have obtained the proper working speed, the clutchpulley g and its coupling-clutch g are coupled in the manner aforesaid,whereupon the screen F is started. After this the chutes K are lowered a proper distance from the openings j of the hopper J by said wheel N This done, they are caused to have an oscillatory motion by coupling the clutch-pulleygr with its clutch g, as before mentioned. By this motion of the chutes K the crushed material is uniformly discharged upon the chute-extension A and chutes h, and thence delivered between the pulverizingrollers, and such material as is finished is discharged through the sieve or screen, while the unfinished portions are elevated by the buckets f and delivered to the upper pair of rollers for repulverization.

WVhat we claim as our invention, and desire to secure by Letters Patent, is

1. The combination, in a pulverizer, of a frame, A, a revolving cylindrical screen, the disks H, bolts H, having nuts h", the sleeves h and washers h, substantially as and for the purpose described.

2. The combination, in a pulverizcr, of a revolving cylindrical screen comprising wiregauze f, side plates, f, having rims f below their peripheries, removable tires f the supporting and operating rollers g, and shafts G and G, substantially as and for the purpose described.

3.- In a pulverizer, a revolving cylindrical screen, in combination with the coupled disks H, having brackets h, and the frame A, having ledges a substantially as and for the purpose described.

4. In a pulverizer, the combination of the revolving cylindrical screen, main shaft B, having tight pulley I), shaft G, having loose clutch-pulley g longitudinally-sliding clutch g rollers g, and pulley g, the shaft G having pulley g and rollers g, and the belts b 9 substantially as and for the purpose described.

' 5. In a pulverizer, suitable feed mechanism and a revolving screen, in combination with the main'shaft B, having tight pulley If, screen-operating shaft G, having loose clutchpulleys g" g, longitudinally-sliding couplingclutches g g, feed-operating shaft I, having tight pulley z" and belts I) and i, substantially as and for the purpose described.

6. In a pulverizer, the combination, with the oscillatory lever L, having pivoted adjustable portion L set-screw Z and frictionblocks Z, of the chute-support j, chute K, an eccentric, i, shaft I, and a hopper, J, substantially as and for the purpose described.

7. In a pulverizer, the combination, with a suitable chute-support and a hopper, of a chute, K, provided with a frame, is, a lever, L,fulcrum or pivot Z, an eccentricgl a shaft,I, rock-shaft M, and an arm, m, substantially as described.

8. In a pnlverizer, the combination of a chute-support, j, a chute, K, frame In, arm 70, pivot k", oscillating lever L, eccentric i and shaft I, substantially as and for the purpose described.

9. The combination,with pulverizing mechanism, of the hopper J, having opening j, a chute, K, pivoted at kfl an oscillating lever, L, and the elevatingsbaft M, having the arm m, substantially as and for the purpose described.

10. In a pulverizing-machine,an oscillating radially-adjustable chute, K, in combination with the shaft M, having arms m M, the elevating-screw a, and the hollow abutment a, substantially as and for the purpose described.

11. In a pulverizing-machine, the combination of pairs of pulverizing-rollers, pairs of journal-boxes 0, each box formed of one piece, suitable yokes, 0, having adjusting devices, and removable half-gib boxes 0 lined with anti-friction-bearing metal 0, said gib-boxes being capable of insertion into and removal from the journal-boxes 0 while the journals of the pulverizing-rollers and journal-boxes re main undisturbed, substantially as described.

RYERSON D. GATES. CHARLES KAESTNER. Witnesses:

AD. PETERSON,

W. W. GRoons. 

